Qtjaktz-crusheb



P. ESTES.

Ore Stamp.

Patented June 12, 1860.

ll i i ll Witnesses-Q Inventor:

W'EuIK AM. PHOT0-LITHO.C0. NNJOSBORNFIS PROCESS.)

UNITED STATES PiiTiTENT orrrcn.

PHILIP ESTES, OF LEAVENWORTH, KANSAS! QUARTZ-CRUSHER.

Specification of Letters Patent No. 28,662, dated June 12, 1860.

T 0 all whom it may concern:

Be it known that I, PHILIP Es'rns, of Leavenworth, in the county of Leavenworth and Territory of Kansas, have invented a new and useful Improvement in Quartz Crushers or Mills; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which-- Figure l, is a front view. Fig. 2, a vertical cross section, and Fig. 3, a horizontal cross section of the machine. Figs. l and 5, represent top and bottom views of a detached part of the machine.

Similar letters of reference, in each of the several figures indicate corresponding parts.

The nature of my invention consists 1st. In combining a friction lifter, pair of antifriction rollers, tooth, and tongue, with a pestle rod and a double cam for the purpose of raising and letting fall the pestle or pestles of a quartz crusher or mill.

It consists 2nd. In combining the srew threaded end of a pestle rod, with a female screw, in a ratchet plate, for the purpose of imparting to the pestle during its descent, a turning motion around its vertical axis so as to produce a grinding as well as a crush ing motion of the pestle.

To enable others, skilled in the art, to make and use my invention, I will proceed to describe its construction and operation.

The pestles b, are each arranged on a vertical rod (4. These rods are guided in and play through collars g, projecting from the bars h, forming part of the main frame of the machine.

The upper ends 0, of the pestle rods, are screw threaded and work through female screws 71, cut in the centers of ratchet plates 2'. These plates 2', are placed on top of the cross rail f, of the main frame, and underneath stirrups (l. Suitable holes are made through the rail f, and through the centers of the stirrups, to allow the. screw threaded ends of the pestle rods to play through.

Ratchet teeth are cut in the circumference of each of the plates 2', and are combined with spring pawls c, fastened to the stirrups.

As the pestle rod is lifted, its screw threaded end working through the female screw 2', causes the plate 2', to turn around, the ratchet teeth slipping by the spring pawl. The arrows in Figs. 4 and 5, represent the direction of this motion of the ratchet plates. But as soon as the pestle rod commences its descent, the screw 0, works down through the plate 2', and tends to impart to the plate z, a motion opposite to the arrows represented in Figs. 4 and 5. The plate (being prevented from turning in this direction, by the pawl 6, taking into the ratchet teeth of the plate) remaining stationary, and a revolving motion is imparted to the pestle and pestle rod, as the screw threaded part c, of the latter works down through the female screw 2'.

The vertical movement of the pestles and the pestle rods, .is produced in the following manner: Lifters m, are combined with the pestle rods, one lifter for each rod. Each lifter is provided with a central hole Z, of a somewhat larger diameter than the pestle rod which plays through said hole. The rear end of the lifter is made with two flanges it, so as to embrace a vertical rod j, (forming part of the frame of the machine) and guide the lifter in its vertical reciprocating motion.

The forward end of the lifter is formed into a tooth s, which serves also as a sup port for a pair of friction rollers a, one of these rollers at each side of the tooth.

Double cams p, p, are arranged upon a driving shaft 0, a double cam opposite to each pestle rod. The space between the two wings p, p, of each of the double cams, is wide enough to let the pestle rod play between. The rollers 71, rest against the edges of the cams p, p.

As the portion of the cams against which the rollers 01, rest rises and commences to lift the rollers a, the lifter m, will be made to bind against the pestle rod, and the rod and pestle will be lifted together with the lifter, until the tooth s, strikes the lower edge of tongue 9. This will tilt the lifter forward sufliciently to release the pestle rod from its grip, and allow the rod and pestle to fall. As soon as the ends of the double cam have passed the rollers n, the lifter drops until it comes to rest against the opposite wings of the double cam, When the above described operation of lifting the lifter and pestle rod, Will be repeated.

What I claim as my invention and desire to secure by Letters Patent, is

1. Combining a friction lifter m, pair of anti-friction rollers n, tooth s, and tongue r, With a pestle rod a, and a double cam p, p, in the manner and for the purposes set forth.

2. Combining the screw threaded end 0, of 10 a pestle rod a, With a female screw z", in a ratchet plate 2', in the manner and for the purposes specified.

PHILIP ESTES.

Vitnesses E. P. WVILLsoN, EDWARD PERRY. 

